Henry c



(No Model.)

H. 0. SERGEANT- DIRECT AGTINGENGINE.

No. 430,757. Patented June 24, 1890.

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ITED STATES PATENT OFFICE.

HENRY O. SERGEANT, OF NEW YORK, N. Y.

DIRECT-ACTING ENGINE.

SPECIFICATION forming part of Letters Patent No. 430,757, dated. June 24, 1890.

Application filed August 30, 1889. Serial No. 322,454. (No model.)

To all whom it may concern.-

Be it known that I, HENRY C. SERGEANT, of New Yorlgin the county and State of New York, have invented a certain new and useful Improvement in Direct-Acting Engines, of which the following is a specification.

My improvement relates to cylinder-heads in direct-acting engines, and is more particularly applicable to cylii'ider-heads employed with rock-drills.

I will describe in detail a cylinder-head embodying my improvement, and then point out the novel features in claims.

In the accompanying drawings, Figure 1 is a side elevation of acylinder-head embodying my improvement. Fig. 2 is an end view of the same, looking in the direction of the arrow, Fig. 1. Fig. 3 is a transverse section taken on the line a 00, Fig. 4. Fig. 4 is a face view of one of the members of the cylindenhead, showing a packing thereof in section.

Similar letters of reference designate corresponding parts in all the figures.

In carrying out my improvement I form a cylinder-head of two members A A, each of which is substantially semicircular and hol- 10W. These portions, when inmse, are secured together by bolts 13, which extend through lugs or cars a, extending from the portionsA A upon the exterior thereof. Each of the portions A A is cast, and in it I form semicircular recesses b, which recesses, as here shown, are L-shaped in the cross-section, although I do not consider such shape to be wholly essential.

cess b. When the members A A have been secured together, the packing-ring C will be firmly retained in the cylinder, which is formed by both the semicircular recesses b. When the cylinder-head is used upon a rockdrill, the drill-rod passes through the packing C, and pressure acting upon the packing effectually prevents leakage.

It will be seen that by my improvement a simple and economical construction is adopted, providing a very ready means for retaining a suitable packing in place.

What I claim as my invention, and desire to secure by Letters Patent, is

1. The combination, with a divided cylinder-head composed of two members, each having formed in it a semicircular recess, of a packingring fitting the recesses in both said members when the members are secured together, substantially as specified.

2. The combination, with a divided cylinder-head composed of two members, each having formed in it a semicircular recess, which is L-shaped in the cross-section, of a packing-ring adapted to [it said recesses when the two members have been secured together, substantiallv as specified.

HENRY O. SERGEANT.

Witnesses:

FREDK. HAYNES, Geo. BARRY. 

